Why the hood of my car will not close

Spray WD-40 onto / into hood latch - push inward on release handle inside car - close hood - if that doesn't work it may require a little more force. Spray bunches of WD.

Agree with Pushrod. However, has there been any front end impact to the vehicle? Even a "tap" or minor fender bender? If so, it could be kinked just enough to prevent proper function of the latch. Just thinking out loud, as there is very limited information shared, and as a result it becomes really hard to make a good suggestion.